The Brief The U.S. Secret Service has dismantled a massive hidden telecom network in New York. According to investigators, over 300 servers and 100,000+ SIM cards could have jammed 911 calls and shut down cell service. Investigators say the network could have blacked out cellular service and flooded emergency response channels with spoofed traffic. The Secret Service also emphasized that there are no known credible threats to New York City at this time. Officials say this is likely not an isolated case and are warning law enforcement nationwide to be on alert for similar hidden telecom networks.